According to Insurance.com, these are the biggest annoyances reported by those surveyed:

Comments on driving speed: 47 percent

Gives directions: 29 percent

Talks too much: 19 percent

Pushes imaginary "brake" with foot: 15 percent

Fiddles with radio or CD player: 10 percent

Talks on phone or texts: 7 percent

Sings: 6 percent

Eats: 3 percent

Family therapist Jane Greer recommended to Insurance.com that passengers think before they speak.

"Rather than commenting on how fast or how badly someone is driving, speak to the impact it is having on you. So instead of saying, 'You're going too fast,' say, 'I'm feeling scared and unsafe, this is making me uncomfortable, please slow down,'" Greer said in a statement.